Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f2bd6f604a5113…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 14:51:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 071f53dee7d96b807a824693465f0720 SHA-1: ab20cf86e0c5c85b005c8e48b9e8cd1c48c708e0 SHA-256: 03f2bd6f604a5113fb5fc547c780fa7e38ae311d167f215f73b9b9475d97fed8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/coin-master-free-spins-link-hack-game-hack PDF link annotation
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/coin-master-strategy_GM406889139.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/how-to-get-free-roblox-with-i-hax-games_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/roblox-free-animation-pack_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/roblox-ooga-booga-chest-spawn-cheat_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/free-robux-no-scam-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/tiktok-free-view-500_GM835599320.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/roblox-tracker_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/roblox-dragon-ball-z-final-stand-level-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mayastisingkawang.com/__statics/gudangsoal/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32F0 23280 bytes
SHA-256: e96cf0d4f6834e28e8faba41942dd26a3fbb76060443d4c5423d26307daeecaa
font_01_sfnt_off00006755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6755 18344 bytes
SHA-256: 0b72bc8737a749971cae617558934a0ee4712de3499baa483a9ef910788e25c1

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